A killer the police have dubbed Billy Dead Mates is killing pairs of best friends, one by one. Just before each murder, he sends his victim a small white book...
Three regional police forces are working together to identify and catch Billy. For five months, they've been failing. Then a fifth victim, scared by what she's seen and heard on the news, comes forward to seek help. Unlike Billy's first four victims, she isn't dead. Yet.
Stand-up comedian Kim Tribbeck has one of Billy's peculiar white books. A stranger gave it to her after a gig she did a year ago. Was he Billy? Now Kim's life depends on working out why she - a woman who has no close friends because she trusts no one - should attract the attention of the Best Friends Killer... And, if Billy has her in his sights, why has he waited so long to strike?

Confusion is the first word that comes to mind. There are so many people involved and thrown at the beginning of the story I got them all mixed up. I did continue to read though and eventually most of them slipped into the right spot.
I like Simon being all smart though I did not always understand his behaviour. The way the whole police team was trying to get information was a bit weird though. I was really wondering when they would start to work together.
Kim was interesting as character. She wanted to help everyone as long as she did not have to look at herself though she knew herself pretty well. I liked her part of the story. It was alive.
The most annoying character award in this book goes to Sondra Halliday with her all men are evil preaching. I did miss a word from her at the end of the book.
The murder investigation is a nice puzzle though difficult to keep up with between Kim her book chapters, the police investigation chapters and Sondra's texts. A lot is happening in the heads 9f the characters. I did manage to guess the right murderer early in the book but the motive was never clear and I do not think it could have been guessed with the available clues. I am glad though I continued reading after the difficult start as the book is a fun mystery read.